[Bug rtl-optimization/116096] [15 Regression] during RTL pass: cprop_hardreg ICE: in extract_insn, at recog.cc:2848 (unrecognizable insn ashift:TI?) with -O2 -flive-range-shrinkage -fno-peephole2 -mstackrealign

[liuhongt at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116096

--- Comment #3 from Hongtao Liu <liuhongt at gcc dot gnu.org> ---

> 
>  (define_insn "ashl<mode>3_doubleword"
>    [(set (match_operand:DWI 0 "register_operand" "=&r,&r")
> -       (ashift:DWI (match_operand:DWI 1 "reg_or_pm1_operand" "0n,r")
> +       (ashift:DWI (match_operand:DWI 1 "reg_or_pm1_operand" "0BC,r")
>                     (match_operand:QI 2 "nonmemory_operand" "<S>c,<S>c")))
>     (clobber (reg:CC FLAGS_REG))]
>    ""
The patch is incomplete, it should also support integer 1 since pm1_operand
means 1 or -1.